Method, apparatus and system for data connection management

ABSTRACT

Embodiments of the present disclosure provide a method, an apparatus and a system for data connection management. The method for data connection management includes: obtaining, by a user equipment UE, first instruction information, wherein the first instruction information is used for instructing to close or open a data connection; and transmitting, by the UE, the first instruction information to a packet data network gateway P-GW, for enabling the P-GW to stop or start data transmission of at least one bearer of the UE according to the first instruction information.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of U.S. patent application Ser. No.15/495,747, filed on Apr. 24, 2017, which is a continuation of U.S.patent application Ser. No. 14/594,575, filed on Jan. 12, 2015, now U.S.Pat. No. 9,674,889, which is a continuation of International ApplicationNo. PCT/CN2012/078810, filed on Jul. 18, 2012. All of theafore-mentioned patent applications are hereby incorporated by referencein their entireties.

TECHNICAL FIELD

The present disclosure relates to a field of communicationstechnologies, and in particular, to a method, an apparatus and a systemfor data connection management.

BACKGROUND

In order to adapt to requirements of a variety of aspects, such as aservice bandwidth, a quality of service, a network coverage and thelike, a 3G (3rd-Generation, third generation mobile communicationtechnology) standard proposes a new evolution technology. EPS (EvolvedPacket System) is a latest evolution standard of 3G UMTS (UniversalMobile Telecommunications System) formulated by a 3GPP (The 3rdGeneration Partnership Project, the third generation partnershipproject) organization, generally known as 4G or SAE (System ArchitectureEvolution). Compared with a 3G technology, one of characteristics of EPSis that only a packet system domain (PS) is retained in a core networkand a circuit switch domain (CS) is discarded.

An EPS network provides a data channel of a mobile network, so that a UE(User Equipment) is supported to access to an internet through the EPSnetwork, realizing transmission of a data service in the internet. Inthe EPS network, in order to better improve a user experience, the EPSnetwork sets up a data channel for the UE in a network attachmentprocess of the UE, namely a default bearer, so as to ensure that the UEmay immediately initiate the data service after finishing theattachment, i.e., the so-called “Always-on” function. The EPS networksupporting the always on function is another main characteristiccompared with the 3G technology.

However, a popularity of intelligent terminals brings a large amount ofbackground data traffic, for example, consumption of data traffics suchas an OS (Operation System) heartbeat, an automatic software upgradedetection, a background program networking update and the like, theconsumption of this additional data traffic generally occurs when the UEperforms no data service, so the “always on” of the UE enables the UE toaccess to the internet while being attached to the EPS network, whichalso provides conditions for the consumption of the above-mentionedlarge amount of background data traffic while providing better userexperience to a user. The consumption of the background traffic may notbe perceived by the user and the UE maintains always on, so theconsumption of the background traffic can not be effectively controlled,thus increasing an additional cost of the user and influencing the userexperience.

SUMMARY

In order to effectively control a traffic of a user equipment,embodiments of the present disclosure provide a method, an apparatus anda system for data connection management. Technical solutions are asfollows.

On one hand, a method for data connection management is provided. Themethod includes obtaining, by a user equipment (UE), first instructioninformation, wherein the first instruction information is used forinstructing to close or open a data connection. The method also includestransmitting, by the UE, the first instruction information to a packetdata network gateway (P-GW), for enabling the P-GW to stop or start datatransmission of at least one bearer of the UE according to the firstinstruction information.

On another hand, a method for data connection management is provided,including: receiving, by a packet data network gateway (P-GW), firstinstruction information transmitted by a user equipment (UE), whereinthe first instruction information is used for instructing to close oropen a data connection; and stopping or starting, by the P-GW, datatransmission of at least one bearer of the UE according to the firstinstruction information.

On another hand, a user equipment (UE) is provided, including: anobtaining module, configured to obtain first instruction information,wherein the first instruction information is used for instructing toclose or open a data connection; and a transmitting module, configuredto transmit the first instruction information to a packet data networkgateway (P-GW), for enabling the P-GW to stop or start data transmissionof at least one bearer of the UE according to the first instructioninformation.

On another hand, a packet data network gateway (P-GW) is provided,including: a receiving module, configured to receive first instructioninformation transmitted by a user equipment (UE), wherein the firstinstruction information is used for instructing to close or open a dataconnection; and a control module, configured to stop or start datatransmission of at least one bearer of the UE according to the firstinstruction information.

The technical solutions provided by the embodiments of the presentdisclosure have beneficial effects as follows. When the UE implementsclosing or opening data connection, the UE obtains the first instructioninformation used for instructing to close or open the data connection.The UE transmits the first instruction information to the P-GW of anetwork side, for enabling the P-GW to stop or start the datatransmission of at least one bearer of the UE according to the firstinstruction information. In this way, the UE is unnecessary to be“always on”, that is to say, when the UE is not in a use state, the UEimplements closing the data connection, and the corresponding networkside P-GW stops the data transmission of at least one bearer of the UE,such that consumption of background data traffic caused by the “alwayson” of the UE may be avoided, and a traffic of a terminal may beeffectively controlled, thus an additional cost of a user may bereduced.

BRIEF DESCRIPTION OF THE DRAWINGS

To illustrate technical solutions in the embodiments of the presentdisclosure more clearly, a brief introduction on the accompanyingdrawings which are needed in the description of the embodiments may begiven below. Apparently, the accompanying drawings in the descriptionbelow are merely some of the embodiments of the present disclosure,based on which other drawings may be obtained by those of ordinary skillin the art without any creative efforts.

FIG. 1 is a flowchart of an embodiment of a method for data connectionmanagement provided by an embodiment of the present disclosure;

FIG. 2 is a flowchart of another embodiment of a method for dataconnection management provided by an embodiment of the presentdisclosure;

FIG. 3 is a flowchart of yet another embodiment of a method for dataconnection management provided by an embodiment of the presentdisclosure;

FIG. 4 is a flowchart of yet another embodiment of a method for dataconnection management provided by an embodiment of the presentdisclosure;

FIG. 5 is a flowchart of yet another embodiment of a method for dataconnection management provided by an embodiment of the presentdisclosure;

FIG. 6 is a flowchart of yet another embodiment of a method for dataconnection management provided by an embodiment of the presentdisclosure;

FIG. 7 is a flowchart of yet another embodiment of a method for dataconnection management provided by an embodiment of the presentdisclosure;

FIG. 8 is a flowchart of yet another embodiment of a method for dataconnection management provided by an embodiment of the presentdisclosure;

FIG. 9 is a first structure schematic diagram of an embodiment of a userequipment UE provided by an embodiment of the present disclosure;

FIG. 10 is a second structure schematic diagram of an embodiment of auser equipment UE provided by an embodiment of the present disclosure;

FIG. 11 is a third structure schematic diagram of an embodiment of auser equipment UE provided by an embodiment of the present disclosure;

FIG. 12 is a fourth structure schematic diagram of an embodiment of auser equipment UE provided by an embodiment of the present disclosure;

FIG. 13 is a fifth structure schematic diagram of an embodiment of auser equipment UE provided by an embodiment of the present disclosure;

FIG. 14 is a sixth structure schematic diagram of an embodiment of auser equipment UE provided by an embodiment of the present disclosure;

FIG. 15 is a first structure schematic diagram of an embodiment of apacket data network gateway (P-GW) provided by an embodiment of thepresent disclosure;

FIG. 16 is a second structure schematic diagram of an embodiment of apacket data network gateway (P-GW) provided by an embodiment of thepresent disclosure;

FIG. 17 is a third structure schematic diagram of an embodiment of apacket data network gateway (P-GW) provided by an embodiment of thepresent disclosure;

FIG. 18 is a fourth structure schematic diagram of an embodiment of apacket data network gateway (P-GW) provided by an embodiment of thepresent disclosure;

FIG. 19 is a fifth structure schematic diagram of an embodiment of apacket data network gateway (P-GW) provided by an embodiment of thepresent disclosure;

FIG. 20 is a sixth structure schematic diagram of an embodiment of apacket data network gateway (P-GW) provided by an embodiment of thepresent disclosure;

FIG. 21 is a seventh structure schematic diagram of an embodiment of apacket data network gateway (P-GW) provided by an embodiment of thepresent disclosure;

FIG. 22 is a structure schematic diagram of an embodiment of a systemfor data connection management provided by an embodiment of the presentdisclosure.

DETAILED DESCRIPTION OF ILLUSTRATIVE EMBODIMENTS

To make objectives, technical solutions and advantages of the presentdisclosure clearer, a further detailed description of theimplementations of the present disclosure will be given below, incombination with the accompanying drawings.

FIG. 1 is a flowchart of an embodiment of a method for data connectionmanagement provided by an embodiment of the present disclosure. Themethod for data connection management includes the following steps.

S101: a UE obtains first instruction information, wherein the firstinstruction information is used for instructing to close or open a dataconnection;

S102: the UE transmits the first instruction information to a P-GW(Packet Data Network Gateway, PDN GW), for enabling the P-GW to stop orstart data transmission of at least one bearer of the UE according tothe first instruction information.

In this embodiment, when the UE implements closing or opening the dataconnection, the UE obtains the first instruction information used forinstructing to close or open the data connection; and the UE transmitsthe first instruction information to the P-GW of a network side, forenabling the P-GW to stop or start the data transmission of at least onebearer of the UE according to the first instruction information, in thisway, the UE may determine to close or open the data connection accordingto a service requirement or a user demand, when the data connection isclosed, a data packet could not be transmitted through a mobile network,thereby avoiding an additional charge generated by consumption ofbackground data traffic in a condition of being unperceived by a user;and when needing to perform a service, the user starts the closed dataconnection to perform service processing. In this way, the consumptionof the background data traffic caused by “always on” of the UE may beavoided, and a traffic of the UE may be effectively controlled, thus anadditional cost of the user may be reduced and a user experience may beimproved.

FIG. 2 is a flowchart of another embodiment of a method for dataconnection management provided by an embodiment of the presentdisclosure. The method for data connection management includes thefollowing steps.

S201: a P-GW receives first instruction information transmitted by a UE,wherein the first instruction information is used for instructing toclose or open a data connection;

S202: the P-GW stops or starts data transmission of at least one bearerof the UE according to the first instruction information.

In this embodiment, when the UE implements closing or opening the dataconnection, the P-GW receives the first instruction informationtransmitted by the UE and used for instructing to close or open the dataconnection; and the P-GW stops or starts the data transmission of atleast one bearer of the UE according to the first instructioninformation. In this way, the UE may determine to close or open the dataconnection according to a service requirement or a user demand, when thedata connection is closed, a data packet could not be transmittedthrough a mobile network, thereby avoiding an additional chargegenerated by consumption of background data traffic in a condition ofbeing unperceived by a user; and when needing to perform a service, theuser starts the closed data connection to perform service processing. Inthis way, the consumption of the background data traffic caused by“always on” of the UE may be avoided, and a traffic of the UE may beeffectively controlled, thus an additional cost of the user may bereduced and a user experience may be improved.

FIG. 3 is a flowchart of yet another embodiment of a method for dataconnection management provided by an embodiment of the presentdisclosure. In this embodiment, when a UE closes or opens a dataconnection, the UE notifies a P-GW of a network side to implementclosing or opening the data connection in a signaling manner; wherein adata connection update request sent by the UE comprises firstinstruction information, and the first instruction information is usedfor instructing to close or open the data connection.

The method for data connection management includes the following steps.

S301: a UE obtains first instruction information, wherein the firstinstruction information is used for instructing to close or open a dataconnection.

In this embodiment, the UE attached to an EPS network maintains anattachment state, when the UE implements processing of closing oropening the data connection, the UE obtains the first instructioninformation, wherein the first instruction information is used forinstructing to close or open the data connection.

Specifically, a user may trigger the UE to implement the processing ofclosing or opening the data connection. For example, the user enablesthe UE to implement the processing of closing or opening the dataconnection by running or operating an application program on the UE. Theapplication program may be a built-in application program of the UE(e.g., a built-in software or function of a UE operation system), andmay also be an application program additionally installed on the UE. TheUE obtains the first instruction information. The UE may also implementthe processing of closing or opening the data connection according to aconfigured policy. For example, when the configured policy is to closethe data connection in the case of UE standby (e.g., screen off) and toopen the data connection in the case of non-standby (e.g., screen on),the UE implements the processing of closing or opening the dataconnection according to the policy.

In this embodiment, the UE may also set a first policy for at least onebearer of the UE according to the first instruction information, whereinthe first policy is used for stopping or starting the data transmissionof at least one traffic flow in the at least one bearer; and the UEstops or starts the data transmission of the at least one traffic flowaccording to the first policy.

S302: the UE sends a data connection update request to an MME (MobilityManagement Entity), wherein the data connection update request comprisesthe first instruction information.

In this step, the UE sends the data connection update request to the MMEthrough an eNB (evolved Node B), wherein the data connection updaterequest may be specifically a service request message, or a trackingarea update request (TAU (tracking area update) Request) message, etc.

The first instruction information may exist in the data connectionupdate request in a form of a data connection update request type,specifically, the data connection update request type may be to closethe data connection or to open the data connection.

S303: the MME obtains the first instruction information from the dataconnection update request, and sends a modify bearer request to the P-GWthrough an S-GW (Serving Gateway), wherein the modify bearer requestcomprises the first instruction information.

In this step, the MME receives the data connection update request,obtains the first instruction information from the data connectionupdate request, and sends the modify bearer request comprising the firstinstruction information to the S-GW; and the S-GW forwards the modifybearer request to the P-GW.

The modify bearer request may be specifically a modify bearer requestmessage, or a modify bearer command message.

Specifically, when the data connection update request type is to closethe data connection, namely the first instruction information isspecifically used for instructing to close the data connection, themodify bearer request may be specifically a suspend notification messageor the like. When the data connection update request type is to open thedata connection, namely the first instruction information isspecifically used for instructing to open the data connection, themodify bearer request may be specifically a resume notification messageor the like.

S304: the P-GW obtains the first instruction information from the modifybearer request, and stops or starts data transmission of at least onebearer of the UE according to the first instruction information.

In this step, after obtaining the first instruction information from themodify bearer request, the P-GW determines whether to implement policyupdate processing with a PCRF (Policy and Charging Rules Function)according to a currently adopted preset policy, specifically, if theP-GW currently adopts a dynamic PCC (Policy and Charging Control)policy, the P-GW needs to implement the policy update processing withthe PCRF, and the P-GW stops or starts the data transmission of at leastone bearer of the UE according to the updated policy; if the P-GW doesnot adopt the dynamic PCC currently, but adopts such policies as staticPCC or not needing PCC interaction according to a policy of an operatoror the like, the P-GW does not need to implement the policy updateprocessing with the PCRF, and directly stops or starts the datatransmission of at least one bearer of the UE according to the firstinstruction information.

That the P-GW implements the policy update processing with the PCRFspecifically includes: the P-GW sends an indication of IP-CAN (InternetProtocol-Connectivity Access Network) session modification message tothe PCRF, wherein the indication of IP-CAN session modification messagecomprises the first instruction information; and the PCRF obtains thefirst instruction information from the indication of IP-CAN sessionmodification message, implements corresponding policy update accordingto the first instruction information, and sends an acknowledge of IP-CANsession modification message to the P-GW; wherein the acknowledge ofIP-CAN session modification message comprises an access control policyafter the policy update processing. Specific flows are as follows.

When the first instruction information is used for instructing to closethe data connection, the PCRF implements access control processingaccording to the first instruction information to obtain a first accesscontrol policy, wherein the first access control policy is used forinstructing the P-GW to stop the data transmission of at least onebearer of the UE; the PCRF sends a first acknowledge of IP-CAN sessionmodification message to the P-GW, wherein the first acknowledge ofIP-CAN session modification message comprises the first access controlpolicy. The first access control policy may be specifically a closingtraffic flow instruction (for example, gating control is set as closed),or a stopping data packet transmission instruction.

When the first instruction information is used for instructing to openthe data connection, the PCRF implements access control processingaccording to the first instruction information to obtain a second accesscontrol policy, wherein the second access control policy is used forinstructing the P-GW to start the data transmission of at least onebearer of the UE; the PCRF sends a second acknowledge of IP-CAN sessionmodification message to the P-GW, wherein the second acknowledge ofIP-CAN session modification message comprises the second access controlpolicy. The second access control policy may be specifically an openingtraffic flow instruction (for example, gating control is set as open),or a starting data packet transmission instruction.

After the P-GW implements the policy update processing with the PCRF,the P-GW receives the acknowledge of IP-CAN session modificationmessage, and stops or starts the data transmission of at least onebearer of the UE according to the access control policy after the policyupdate processing comprised in the acknowledge of IP-CAN sessionmodification message.

In this step, that the P-GW stops or starts the data transmission of atleast one bearer of the UE according to the first instructioninformation includes: the P-GW stops or starts the data transmission ofat least one bearer of the UE according to the first instructioninformation; or the P-GW stops or starts the data transmission of atleast one bearer of the UE according to the first access control policyor the second access control policy; or the P-GW stops the datatransmission of at least one bearer of the UE according to the firstinstruction information and the first access control policy; or, theP-GW starts the data transmission of at least one bearer of the UEaccording to the first instruction information and the second accesscontrol policy.

That the P-GW stops the data transmission of at least one bearer of theUE specifically further includes: the P-GW stops the data transmissionon all bearers of the UE; or the P-GW stops the data transmission on aparticular bearer of the UE. Preferably, the P-GW may also implementbearer deletion processing to delete other bearers excluding a defaultbearer in the at least one bearer of the UE, or delete at least oneappointed bearer excluding the default bearer in the at least onebearer; and stops the data transmission of the bearer not deleted in theat least one bearer of the UE according to the first instructioninformation. In this way, after the P-GW stops the data transmission ofthe bearer not deleted in the at least one bearer of the UE, if the P-GWreceives a new downlink data packet of the UE subsequently, the P-GW maydirectly discard the downlink data packet and not implement a bearerupdate flow or a bearer setup flow. That the P-GW stops the datatransmission of the bearer not deleted in the at least one beareraccording to the first instruction information includes: the P-GW sets asecond policy for the bearer not deleted according to the firstinstruction information, wherein the second policy is used for stoppingthe data transmission of at least one traffic flow in the bearer notdeleted; and the P-GW stops the data transmission of at least one dataflow according to the second policy.

That the P-GW implements the bearer deletion processing includes: theP-GW sends a delete bearer request message to the MME through the S-GW;the MME sends a deactivate EPS bearer context request message to the UE;the UE sends a deactivate EPS bearer context accept message to the MME;and the MME sends a delete bearer response message to the P-GW throughthe S-GW, to finish the bearer deletion processing.

In this embodiment, the UE may also receive a delete bearer requestinitiated by the P-GW to delete a part of bearers in the at least onebearer; the UE sets a second policy for the bearer not deleted in the atleast one bearer according to the first instruction information, whereinthe second policy is used for stopping the data transmission of at leastone traffic flow in the bearer not deleted; and the UE stops the datatransmission of at least one traffic flow according to the secondpolicy.

That the P-GW starts the data transmission of at least one bearer of theUE specifically includes: the P-GW allows the data transmission of atleast one bearer of the UE, subsequently, the P-GW may initiate a bearersetup flow or a bearer update flow according to a received downlink datapacket, to finish the downlink data transmission of at least one bearer;and the P-GW forwards an uplink data packet when receiving the same, andallows to set up a new bearer for the UE.

In this embodiment, that the P-GW starts the data transmission of atleast one bearer of the UE according to the first instructioninformation includes: the P-GW sets a third policy for the at least onebearer according to the first instruction information, wherein the thirdpolicy is used for starting the data transmission of at least onetraffic flow in the bearer not deleted; and the P-GW starts the datatransmission of the at least one data flow according to the thirdpolicy.

S305: the P-GW sends a modify bearer response to the MME through theS-GW.

In this step, after stopping or starting the data transmission of the atleast one bearer of the UE according to one or two instructions of thefirst instruction information, the first access control policy and thesecond access control policy, the P-GW sends the modify bearer responseto the MME through the S-GW, to notify the S-GW and the MME that theP-GW has stopped or started the data transmission of the at least onebearer of the UE.

The modify bearer response may be specifically a modify bearer responsemessage, an update bearer request message, a suspend acknowledge messageor a resume acknowledge message, etc.

S306: the MME sends a data connection update response to the UE.

In this step, the data connection update response may be specifically atracking area update accept (TAU Accept) message, the MME sends the dataconnection update response to the UE through the TAU Accept message, tonotify the UE that the P-GW has finished the processing of stopping orstarting transmission of data packets of the UE.

Or, the MME sends the data connection update response to the eNB throughan initial context setup request message, to notify the eNB; and the eNBsends the data connection update response to the UE through a radiobearer setup request message, to notify the UE that the P-GW hasfinished the processing of stopping or starting transmission of datapackets of the UE.

In this embodiment, when the UE implements the processing of closing thedata connection, the UE may stop the sending of the uplink data packetat any moment during the above-mentioned S302 to S306, or may also stopthe sending of the uplink data packet before S302 or after S306. Whenthe UE implements the processing of opening the data connection, and ifan uplink data packet needs to be sent currently, the UE needs to sendthe uplink data packet after S306.

In one implementation of this embodiment, the first instructioninformation includes second instruction information, wherein the secondinstruction information is used for instructing to close or open thedata connection of a particular traffic flow, i.e., the secondinstruction information is used for instructing to close or open a partof data connections; correspondingly, the P-GW stops or starts the datatransmission of at least one bearer of the particular traffic flow ofthe UE according to one or two instructions of the second instructioninformation, the first access control policy and the second accesscontrol policy.

When the UE closes or opens the data connection of the particulartraffic flow, the first instruction information includes the secondinstruction information, namely, on the basis of including a dataconnection update request type, the first instruction informationfurther includes the second instruction information of relatedinformation of the particular traffic flow. The data connection updaterequest type is to close the data connection or to open the dataconnection; the related information of the particular traffic flowindicated by the second instruction information includes any one or moreof identification information of the particular traffic flow andinformation of an application program corresponding to the particulartraffic flow.

The identification information of the particular traffic flow includesany one or more of a source IP (Internet Protocol) address, a target IPaddress, a source port number, a target port number and a protocol typeof the particular traffic flow; and the information of the applicationprogram corresponding to the particular traffic flow includes any one ormore of an application program identifier (Application ID), anapplication program title and an application program serial number.

When the particular traffic flow is a plurality of traffic flows, therelated information of the particular traffic flow correspondinglycomprises a combination of the related information of the plurality oftraffic flows.

In this embodiment, when the first instruction information includes thesecond instruction information and instructs to close the dataconnection of the particular traffic flow, if the particular trafficflow transmits the data packet by adopting a dedicated bearer, that theP-GW stops the data transmission of at least one bearer of theparticular traffic flow of the UE according to the second instructioninformation includes: the P-GW may implement bearer deletion processingto delete the dedicated bearer corresponding to the particular trafficflow; the P-GW sets a limit policy for a bearer remaining after deletionof the UE according to the first instruction information and/or thefirst access control policy, wherein the limit policy is used forprohibiting the data transmission of at least one bearer of theparticular traffic flow; wherein in the embodiments of the presentdisclosure, “/” expresses “or”.

The bearer remaining after deletion of the UE includes: a bearer notconfigured with a TFT (Traffic Flow Template), for example a defaultbearer; a dedicated bearer for transmitting unclosed traffic flow data,etc. The limit policy may be a data packet filter comprising the relatedinformation of the particular traffic flow.

The P-GW stops the data transmission of at least one bearer of theparticular traffic flow which is closed and instructed by the secondinstruction information, on the bearer remaining after deletion of theUE, according to the set limit policy.

In this case, if the P-GW receives a downlink data packet of othertraffic flows excluding the closed particular traffic flow of the UEsubsequently, the P-GW may initiate a bearer setup flow or a bearerupdate flow according to the downlink data packet of other trafficflows, to finish downlink data transmission of at least one bearer ofother unclosed traffic flows.

If the P-GW sets the limit policy on the bearer remaining after deletionof the UE, for example, setting the data packet filter comprising therelated information of the particular traffic flow, when the UEimplements opening the data connection of the particular traffic flow,namely, the second instruction information instructs to open theparticular traffic flow, the P-GW updates the limit policy, to enablethe same to cancel the related information of the particular trafficflow to be open, and starts the data transmission of at least one bearerof the particular traffic flow. If the UE implements opening the dataconnection of all traffic flows, the P-GW cancels the limit policy andstarts the data transmission of at least one bearer of all trafficflows. The above-mentioned updating or canceling the limit policy may bespecifically that, the P-GW updates or cancels the limit policy on thebearer with the set limit policy, including the default bearer and thededicated bearer.

In this embodiment, when the UE implements closing or opening the dataconnection, the UE obtains the first instruction information used forinstructing to close or open the data connection; the UE transmits thefirst instruction information to the P-GW of a network side, the P-GWstops the data transmission of at least one bearer of the UE accordingto the first instruction information and/or a first access controlpolicy, or the P-GW starts the data transmission of at least one bearerof the UE according to the first instruction information and/or a secondaccess control policy, in this way, the UE is unnecessary to be “alwayson”, that is to say, when the UE is not in a use state, the UEimplements closing the data connection, and the corresponding networkside P-GW stops the data transmission of at least one bearer of the UE,such that consumptions of background data traffics caused by the “alwayson” of the UE may be avoided, and a traffic of a terminal may beeffectively controlled, thus a data traffic and an additional cost of auser may be saved and a user experience may be improved.

FIG. 4 is a flowchart of yet another embodiment of a method for dataconnection management provided by an embodiment of the presentdisclosure. In this embodiment, when a UE closes or opens a dataconnection, the UE notifies a P-GW of a network side to implementclosing or opening the data connection in a signaling manner; wherein arequest bearer resource modification message sent by the UE comprisesfirst instruction information, and the first instruction information isused for instructing to close or open the data connection.

The method for data connection management includes the following steps.

S401: a UE obtains first instruction information, wherein the firstinstruction information is used for instructing to close or open a dataconnection.

S401 is similar to S301 in the above-mentioned embodiment, thus will notbe repeated redundantly herein, and may specifically refer to relateddescriptions of S301.

S402: the UE sends a request bearer resource modification message to anMME, wherein the request bearer resource modification message comprisesthe first instruction information.

In this step, the UE sends the request bearer resource modificationmessage to the MME through an eNB, wherein the request bearer resourcemodification message comprises the first instruction information.

S403: the MME obtains the first instruction information from the requestbearer resource modification message, and sends a bearer resourcecommand message to a P-GW through an S-GW, wherein the bearer resourcecommand message comprises the first instruction information.

S404: the P-GW obtains the first instruction information from the bearerresource command message, and implements policy update processing with aPCRF.

In this step, after obtaining the first instruction information from thebearer resource command message, the P-GW determines whether toimplement the policy update processing with the PCRF according to acurrently adopted preset policy, specifically, if the P-GW currentlyadopts a dynamic PCC policy, the P-GW needs to implement the policyupdate processing with the PCRF, and the P-GW stops or starts the datatransmission of at least one bearer of the UE according to the updatedpolicy; if the P-GW does not adopt the dynamic PCC currently, but adoptssuch policies as static PCC or not needing PCC interaction according toa policy of an operator or the like, the P-GW does not need to implementthe policy update processing with the PCRF, and directly stops or startsthe data transmission of at least one bearer of the UE according to thefirst instruction information.

The process that the P-GW implements the policy update processing withthe PCRF is similar to the process of the policy update processing inS304 in the above-mentioned embodiment, thus will not be repeatedredundantly herein, and may specifically refer to related descriptionsof S304.

S405: the P-GW stops or starts the data transmission of at least onebearer of the UE according to the first instruction information and/oran access control policy after the policy update processing received bythe P-GW.

In this step, the P-GW receives an acknowledge of IP-CAN sessionmodification message sent by the PCRF, and stops or starts the datatransmission of at least one bearer of the UE according to the accesscontrol policy after the policy update processing, comprised in theacknowledge of IP-CAN session modification message.

Specifically, the P-GW may stop or start the data transmission on allbearers of the UE according to the access control policy; or, the P-GWstops the data transmission of at least one bearer of the UE accordingto the first instruction information and/or a first access controlpolicy; or, the P-GW starts the data transmission of at least one bearerof the UE according to the first instruction information and/or a secondaccess control policy.

That the P-GW stops the data transmission of at least one bearer of theUE specifically further includes: the P-GW stops the data transmissionon all bearers of the UE; or the P-GW stops the data transmission on aparticular bearer of the UE. Preferably, the P-GW may also implementbearer deletion processing to delete other bearers excluding a defaultbearer in the at least one bearer of the UE, or delete at least oneappointed bearer excluding the default bearer in the at least onebearer; and stop the data transmission of the bearer not deleted in theat least one bearer of the UE according to the first instructioninformation. The process that the P-GW implements the bearer deletionprocessing is similar to the process of the bearer deletion processingin the method embodiment corresponding to FIG. 3, thus will not berepeated redundantly herein, and may specifically refer to relateddescriptions of the above-mentioned embodiment.

In this embodiment, the P-GW implements the bearer deletion processing,after deleting the other bearers excluding the default bearer in the atleast one bearer of the UE, or deleting at least one appointed bearerexcluding the default bearer in the at least one bearer, the P-GW mayalso implement a bearer update flow to send updated settings to the UE.Specifically, the P-GW sends an update bearer request message to the MMEthrough the S-GW; the MME receives the update bearer request message,and sends a modify EPS (Evolved Packet System) bearer context requestmessage, or a downlink NAS (Non Access Stratum) transport message to theUE; the UE receives the modify EPS bearer context request message or thedownlink NAS transport message, and sends a modify EPS context accept,or an uplink NAS transport message to the MME; and the MME receives themodify EPS context accept message or the uplink NAS transport message,and sends an update bearer response message to the P-GW through theS-GW, to finish the bearer update flow.

The process that the P-GW starts the data packet transmission of the UEis similar to the processing process that the P-GW starts the datapacket transmission of the UE in the method embodiment corresponding toFIG. 3, thus will not be repeated redundantly herein, and mayspecifically refer to related descriptions of the above-mentionedembodiment.

In one implementation of this embodiment, the first instructioninformation includes second instruction information, wherein the secondinstruction information is used for instructing to close or open thedata connection of a particular traffic flow, i.e., the secondinstruction information is used for instructing to close or open a partof data connections; correspondingly, the P-GW stops or starts the datatransmission of at least one bearer of the particular traffic flow ofthe UE according to the first instruction information including secondinstruction information. Related descriptions of the second instructioninformation are similar to those of the second instruction informationin the method embodiment corresponding to FIG. 3, thus will not berepeated redundantly herein, and may specifically refer to relateddescriptions of the above-mentioned embodiment.

In this embodiment, when the UE implements closing or opening the dataconnection, the UE obtains the first instruction information used forinstructing to close or open the data connection; the UE transmits thefirst instruction information to the P-GW of a network side, the P-GWstops the data transmission of at least one bearer of the UE accordingto the first instruction information and/or a first access controlpolicy, or the P-GW starts the data transmission of at least one bearerof the UE according to the first instruction information and/or a secondaccess control policy, in this way, the UE is unnecessary to be “alwayson”, that is to say, when the UE is not in a use state, the UEimplements closing the data connection, and the corresponding networkside P-GW stops the data transmission of at least one bearer of the UE,such that consumptions of background data traffics caused by the “alwayson” of the UE may be avoided, and a traffic of a terminal may beeffectively controlled, thus a data traffic and an additional cost of auser may be saved and a user experience may be improved.

FIG. 5 is a flowchart of yet another embodiment of method for dataconnection management provided by an embodiment of the presentdisclosure. In this embodiment, when a UE closes or opens a dataconnection, the UE notifies a P-GW of a network side to implementclosing or opening the data connection in a data packet manner through apreset channel; wherein a first appointed data packet sent by the UEcomprises first instruction information, and the first instructioninformation is used for instructing to close or open the dataconnection.

The method for data connection management includes the following steps.

S501: a UE obtains first instruction information, wherein the firstinstruction information is used for instructing to close or open a dataconnection.

S501 is similar to S301 in the above-mentioned embodiment, thus will notbe repeated redundantly herein, and may specifically refer to relateddescriptions of S301.

S502: the UE sends a first appointed data packet to a P-GW through apreset channel, wherein the first appointed data packet comprises thefirst instruction information.

In this step, the UE sends the first appointed data packet to the P-GWthrough the preset channel having been set up between the UE and theP-GW for the data connection, for example, a GTP (General packet radioservice Tunnel Protocol) channel (specifically may be called a PDP(Packet Data Protocol) channel, or a bearer), wherein the firstappointed data packet comprises the first instruction information, andthe first instruction information is used for instructing to close oropen the data connection.

S503: the P-GW obtains the first instruction information from the firstappointed data packet, and stops or starts data transmission of at leastone bearer of the UE according to the first instruction information.

In this step, the P-GW receives the first appointed data packet, andobtains the first instruction information from the first appointed datapacket; then the P-GW stops or starts the data transmission of at leastone bearer of the UE according to the first instruction information,including optionally implementing policy update processing with a PCRF,specifically, the process that the P-GW stops or starts the datatransmission of at least one bearer of the UE according to the firstinstruction information is similar to S304 in the above-mentionedembodiment, thus will not be repeated redundantly herein, and mayspecifically refer to related descriptions of S304.

Optionally, the P-GW may also implement bearer deletion processing andbearer update processing, which may specifically refer to relateddescriptions in the method embodiments corresponding to FIG. 3 and FIG.4, and will not be repeated redundantly herein.

In one implementation of this embodiment, the first instructioninformation includes second instruction information, wherein the secondinstruction information is used for instructing to close or open thedata connection of a particular traffic flow, i.e., the secondinstruction information is used for instructing to close or open a partof data connections; correspondingly, the P-GW stops or starts the datatransmission of at least one bearer of the particular traffic flow ofthe UE according to the first instruction information including secondinstruction information. Related descriptions of the second instructioninformation are similar to those of the second instruction informationin the method embodiment corresponding to FIG. 3, thus will not berepeated redundantly herein, and may specifically refer to relateddescriptions of the above-mentioned embodiment.

In this embodiment, when the UE implements closing or opening the dataconnection, the UE obtains the first instruction information used forinstructing to close or open the data connection; the UE transmits thefirst instruction information to the P-GW of a network side through thepreset channel, the P-GW stops the data transmission of at least onebearer of the UE according to the first instruction information and/or afirst access control policy, or the P-GW starts the data transmission ofat least one bearer of the UE according to the first instructioninformation and/or a second access control policy, in this way, the UEis unnecessary to be “always on”, that is to say, when the UE is not ina use state, the UE implements closing the data connection, and thecorresponding network side P-GW stops the data transmission of at leastone bearer of the UE, such that consumptions of background data trafficscaused by the “always on” of the UE may be avoided, and a traffic of aterminal may be effectively controlled, thus a data traffic and anadditional cost of a user may be saved and a user experience may beimproved.

FIG. 6 is a flowchart of yet another embodiment of a method for dataconnection management provided by an embodiment of the presentdisclosure. In this embodiment, when a UE closes or opens a dataconnection, the UE notifies a P-GW of a network side to implementclosing or opening the data connection in a data packet manner through apreset channel. A second appointed data packet sent by the UE isspecifically first instruction information, and the second appointeddata packet is used for instructing to close or open the dataconnection; when a target address of the second appointed data packet isa first preset value, and/or a target port number is a second presetvalue, the second appointed data packet is specifically used forinstructing to close the data connection; and when the target address ofthe second appointed data packet is a third preset value, and/or thetarget port number is a fourth preset value, the second appointed datapacket is specifically used for opening the data connection.

The method for data connection management includes the following.

S601: a UE obtains a second appointed data packet, wherein the secondappointed data packet is used for instructing to close or open a dataconnection.

In this step, the second appointed data packet is specifically firstinstruction information, wherein the first instruction information,namely the second appointed data packet is used for instructing to closeor open the data connection.

In a practical application, the UE attached to an EPS network maintainsan attachment state, when the UE implements processing of closing oropening the data connection, the UE obtains the second appointed datapacket, when a target address of the second appointed data packet is afirst preset value, and/or a target port number is a second presetvalue, the second appointed data packet is specifically used forinstructing to close the data connection; and when the target address ofthe second appointed data packet is a third preset value, and/or thetarget port number is a fourth preset value, the second appointed datapacket is specifically used for opening the data connection.

Specifically, a user may trigger the UE to implement the processing ofclosing or opening the data connection, for example, the user enablesthe UE to implement the processing of closing or opening the dataconnection by running or operating an application program on the UE,wherein the application program may be a built-in application program ofthe UE (e.g., a built-in software or function of a UE operation system),and may also an application program additionally installed on the UE;the UE obtains the first instruction information, the UE may alsoimplement the processing of closing or opening the data connectionaccording to a configured policy, for example, when the configuredpolicy is to close the data connection in the case of UE standby (e.g.,screen off) and to open the data connection in the case of non-standby(e.g., screen on), the UE implements the processing of closing oropening the data connection according to the policy.

In this embodiment, the UE may also set a first policy for at least onebearer of the UE according to the first instruction information, whereinthe first policy is used for stopping or starting the data transmissionof at least one traffic flow in the at least one bearer; and the UEstops or starts the data transmission of the at least one traffic flowaccording to the first policy.

S602: the UE sends the second appointed data packet to a P-GW through apreset channel.

In this step, the UE sends the second appointed data packet to the P-GWthrough the preset channel having been set up between the UE and theP-GW for the data connection, for example, a GTP channel, wherein thesecond appointed data packet realizes instructing to close or open thedata connection according to corresponding values of the target addressand/or the target port number thereof.

S603: the P-GW obtains closing or opening data connection informationaccording to the target address and/or target port number of the secondappointed data packet, and correspondingly stops or starts the datatransmission of at least one bearer of the UE according to the closingor opening data connection information.

In this step, when the target address of the second appointed datapacket is the first preset value, and/or the target port number is thesecond preset value, the second appointed data packet corresponds toclosing the data connection, then the P-GW obtains the closing dataconnection information according to the target address and/or targetport number of the second appointed data packet, and the P-GW stops thedata transmission of at least one bearer of the UE according to theclosing data connection information.

When the target address of the second appointed data packet is the thirdpreset value, and/or the target port number is the fourth preset value,the second appointed data packet corresponds to opening the dataconnection, then the P-GW obtains the opening data connectioninformation according to the target address and/or target port number ofthe second appointed data packet, and the P-GW starts the datatransmission of at least one bearer of the UE according to the openingdata connection information.

The process that the P-GW stops or starts the data transmission of atleast one bearer of the UE according to the closing or opening dataconnection information is similar to the process of stopping or startingthe data transmission of at least one bearer of the UE according to thefirst instruction information in S304 in the above-mentioned embodiment,and may specifically refer to related descriptions of S304; wherein theaction and function of the closing or opening data connectioninformation are similar to those of the first instruction information inabove-mentioned method embodiment corresponding to FIG. 3.

Optionally, the P-GW may also implement bearer deletion processing andbearer update processing, which may specifically refer to relateddescriptions in the method embodiments corresponding to FIG. 3 and FIG.4, and will not be repeated redundantly herein.

In one implementation of this embodiment, the second appointed datapacket includes second instruction information, wherein the secondinstruction information is used for instructing to close or open thedata connection of a particular traffic flow; correspondingly, the P-GWstops or starts the data transmission of at least one bearer of theparticular traffic flow of the UE according to the second appointed datapacket. Related descriptions of the second instruction information aresimilar to those of the second instruction information in the methodembodiment corresponding to FIG. 3, thus will not be repeatedredundantly herein, and may specifically refer to related descriptionsof the above-mentioned embodiment.

In this embodiment, when the UE implements closing or opening the dataconnection, the UE obtains the second appointed data packet used forinstructing to close or open the data connection, wherein the secondappointed data packet may be specially the first instructioninformation; the UE transmits the second appointed data packet to theP-GW of a network side through the preset channel, the P-GW stops orstarts the data transmission of at least one bearer of the UE accordingto the second appointed data packet, in this way, the UE is unnecessaryto be “always on”, that is to say, when the UE is not in a use state,the UE implements closing the data connection, and the correspondingnetwork side P-GW stops the data transmission of at least one bearer ofthe UE, such that consumptions of background data traffics caused by the“always on” of the UE may be avoided, and a traffic of a terminal may beeffectively controlled, thus a data traffic and an additional cost of auser may be saved and a user experience may be improved.

FIG. 7 is a flowchart of yet another embodiment of a method for dataconnection management provided by an embodiment of the presentdisclosure. In this embodiment, when a UE closes or opens a dataconnection, the UE notifies an AS (Application server)/AF (ApplicationFunction) of a network side to implement corresponding processing ofclosing or opening the data connection in a data packet manner through apreset channel, such that a P-GW of the network side stops or startsdata transmission of at least one bearer of the UE; wherein a firstappointed data packet sent by the UE comprises first instructioninformation, and the first instruction information is used forinstructing to close or open the data connection.

S701: a UE obtains first instruction information, wherein the firstinstruction information is used for instructing to close or open a dataconnection.

S701 is similar to S301 in the above-mentioned embodiment, thus will notbe repeated redundantly herein, and may specifically refer to relateddescriptions of S301.

S702: the UE sends a first appointed data packet to an AS/AF through apreset channel, wherein the first appointed data packet comprises thefirst instruction information.

In this step, the UE sends the first appointed data packet to a P-GWthrough the preset channel having been set up between the UE and theP-GW for the data connection, for example, a GTP channel, and the P-GWforwards the first appointed data packet to the AS/AF; wherein the firstappointed data packet comprises the first instruction information, andthe first instruction information is used for instructing to close oropen the data connection.

S703: the AS/AF obtains the first instruction information from the firstappointed data packet, and implements application service informationupdate processing with a PCRF according to the first instructioninformation.

In this step, the AS/AF receives the first appointed data packet, andobtains the first instruction information from the first appointed datapacket, wherein the first instruction information is used forinstructing to close or open the data connection.

The AS/AF implements the application service information updateprocessing with the PCRF according to the first instruction information,specifically, the AS/AF updates service information in a service sessionaccording to the first instruction information, if the first instructioninformation instructs to close the data connection, the AS/AF updatesthe service information to make it exclude any service information orsets all service information to be ineffective; if the first instructioninformation instructs to open the data connection, the AS/AF updates theservice information to make it include service information of the UErelated to the AS/AF or sets the existing service information to beeffective. The AS/AF sends a modify session information request messageincluding updated service information to the PCRF, for enabling the PCRFto implement policy update processing according to the updated serviceinformation, so as to enable the P-GW to implement the processing ofclosing or opening the data connection.

S704: after implementing an application service information updateprocedure, the PCRF sends a policy and charging rules update message tothe P-GW, wherein the policy and charging rules update message comprisesan access control policy used for closing or opening the dataconnection.

In this step, after implementing the application service informationupdate procedure, the PCRF may send an update complete response to theAS/AF.

In addition, after implementing the application service informationupdate procedure, the PCRF sends the policy and charging rules update(Policy and Charging Rules Provision) message to the P-GW, wherein thepolicy and charging rules update message comprises the access controlpolicy used for closing or opening the data connection, the specificprocessing process may refer to related descriptions of methodembodiments corresponding to FIG. 3 and FIG. 4, and will not be repeatedredundantly herein.

S705: the P-GW stops or starts data transmission of at least one bearerof the UE according to the policy and charging rules update message.

In this step, the P-GW stops or starts the data transmission of at leastone bearer of the UE according to the corresponding access controlpolicy in the policy and charging rules update message, the specificprocessing process may refer to related descriptions of methodembodiments corresponding to FIG. 3 and FIG. 4, and will not be repeatedredundantly herein.

The P-GW may also implement bearer deletion processing and/or bearerupdate processing, which may specifically refer to related descriptionsin the method embodiments corresponding to FIG. 3 and FIG. 4, and willnot be repeated redundantly herein.

In this embodiment, after receiving the policy and charging rules updatemessage, the P-GW may also send a policy and charging rules acknowledge(Policy and Charging Rules Ack) message to the PCRF, to notify the PCRFthat the P-GW has received the policy and charging rules update message.

In one implementation of this embodiment, the first instructioninformation includes second instruction information, wherein the secondinstruction information is used for instructing to close or open thedata connection of a particular traffic flow; i.e., the secondinstruction information is used for instructing to close or open a partof data connections. At this time, in step S703, the AS/AF updates theservice information according to the particular traffic flow in thesecond instruction information. Specifically, when the secondinstruction information is used for instructing to close the dataconnection of the particular traffic flow, the AS/AF updates the serviceinformation to make it exclude service information of the particulartraffic flow or sets the service information of the particular trafficflow to be ineffective. If the second instruction information instructsto open the data connection of the particular traffic flow, the AS/AFupdates the service information to make it include the serviceinformation of the particular traffic flow or sets the serviceinformation of the particular traffic flow to be effective. The AS/AFsends the modify session information request message comprising theupdated service information to the PCRF, for enabling the PCRF toimplement the policy update processing according to the updated serviceinformation to obtain a first access control policy or a second accesscontrol policy, so as to enable the P-GW to implement the processing ofclosing or opening the data connection. Correspondingly, the P-GW stopsthe data transmission of at least one bearer of the particular trafficflow of the UE according to the first instruction information and/or thefirst access control policy, or the P-GW starts the data transmission ofat least one bearer of the particular traffic flow of the UE accordingto the first instruction information and/or the second access controlpolicy. Related descriptions of the second instruction information aresimilar to those of the second instruction information in the methodembodiment corresponding to FIG. 3, thus will not be repeatedredundantly herein, and may specifically refer to related descriptionsof the above-mentioned embodiment.

In this embodiment, when the UE implements closing or opening the dataconnection, the UE obtains the first instruction information used forinstructing to close or open the data connection; the UE transmits thefirst instruction information to the AS/AF of the network side throughthe preset channel, for enabling the AS/AF to implement correspondingprocessing of closing or opening the data connection, so as to enablethe P-GW of the network side to stop or start the data transmission ofat least one bearer of the UE, in this way, the UE is unnecessary to be“always on”, that is to say, when the UE is not in a use state, the UEimplements closing the data connection, and the corresponding networkside P-GW stops the data transmission of at least one bearer of the UE,such that consumptions of background data traffics caused by the “alwayson” of the UE may be avoided, and a traffic of a terminal may beeffectively controlled, thus a data traffic and an additional cost of auser may be saved and a user experience may be improved.

FIG. 8 is a flowchart of yet another embodiment of a method for dataconnection management provided by an embodiment of the presentdisclosure. In this embodiment, when a UE closes or opens a dataconnection, the UE notifies an AS/AF of a network side to implementclosing or opening the data connection in a data packet manner through apreset channel, such that a P-GW of the network side stops or startsdata transmission of at least one bearer of the UE. A second appointeddata packet sent by the UE is specifically first instructioninformation, and the second appointed data packet is used forinstructing to close or open the data connection; when a target addressof the second appointed data packet is a first preset value, and/or atarget port number is a second preset value, the second appointed datapacket is specifically used for instructing to close the dataconnection; and when the target address of the second appointed datapacket is a third preset value, and/or the target port number is afourth preset value, the second appointed data packet is specificallyused for opening the data connection.

The method for data connection management includes the following steps.

S801: a UE obtains a second appointed data packet, wherein the secondappointed data packet is used for instructing to close or open a dataconnection.

S801 is similar to S601 in the above-mentioned embodiment, thus will notbe repeated redundantly herein, and may specifically refer to relateddescriptions of S601.

S802: the UE sends the second appointed data packet to an AS/AF througha preset channel.

In this step, the UE sends the second appointed data packet to a P-GWthrough the preset channel having been set up between the UE and theP-GW for the data connection, for example, a GTP channel, the P-GWforwards the first appointed data packet to the AS/AF, wherein thesecond appointed data packet instructs to close or to open the dataconnection according to corresponding values of a target address and/ora target port number thereof.

S803: the AS/AF obtains closing or opening data connection informationaccording to the target address and/or target port number of the secondappointed data packet, and implements application service informationupdate processing with a PCRF according to the closing or opening dataconnection information.

In this step, when the target address of the second appointed datapacket is a first preset value, and/or the target port number is asecond preset value, the second appointed data packet corresponds toclosing the data connection, then the AS/AF obtains the closing dataconnection information according to the target address and/or targetport number of the second appointed data packet. When the target addressof the second appointed data packet is a third preset value, and/or thetarget port number is a fourth preset value, the second appointed datapacket corresponds to opening the data connection, then the AS/AFobtains the opening data connection information according to the targetaddress and/or target port number of the second appointed data packet.The process that the AS/AF implements the application serviceinformation update processing with the PCRF according to the closing oropening data connection information is similar to the process ofimplementing the application service information update processing withthe PCRF according to the first instruction information in S703 in theabove-mentioned embodiment, and may specifically refer to relateddescriptions of S703; wherein the action and function of the closing oropening data connection information are similar to those of the firstinstruction information in the method embodiment corresponding to FIG.7.

S804: after implementing the application service information updateprocessing, the PCRF generates a policy and charging rules updatemessage, and sends the policy and charging rules update message to theP-GW.

S804 is similar to S704 of the above-mentioned embodiment, thus will notbe repeated redundantly herein, and may specifically refer to relateddescriptions of S704.

S805: the P-GW stops or starts data transmission of at least one bearerof the UE according to the policy and charging rules update message.

S805 is similar to S705 in the above-mentioned embodiment, thus will notbe repeated redundantly herein, and may specifically refer to relateddescriptions of S705.

The P-GW may also implement bearer deletion processing and/or bearerupdate processing, which may specifically refer to related descriptionsin the method embodiments corresponding to FIG. 3 and FIG. 4, and willnot be repeated redundantly herein.

In one implementation of this embodiment, the second appointed datapacket includes second instruction information, wherein the secondinstruction information is used for instructing to close or open thedata connection of a particular traffic flow; correspondingly, the P-GWstops the data transmission of at least one bearer of the particulartraffic flow of the UE according to the second appointed data packetand/or a first access control policy, or the P-GW starts the datatransmission of at least one bearer of the particular traffic flow ofthe UE according to the second appointed data packet and/or a secondaccess control policy. Related descriptions of the second instructioninformation are similar to those of the second instruction informationin the method embodiment corresponding to FIG. 3, thus will not berepeated redundantly herein, and may specifically refer to relateddescriptions of the above-mentioned embodiment.

In this embodiment, in S802, the UE may select to merely send the secondappointed data packet to an appointed AS/AF, or respectively send thesecond appointed data packet to a plurality of AS/AF, and the AS/AFreceiving the second appointed data packet implements subsequentprocessing. When the second appointed data packet includes the secondinstruction information, the UE may merely send the second instructioninformation to the AS/AF corresponding to the particular traffic flow.

In this embodiment, when the UE implements closing or opening the dataconnection, the UE obtains the second appointed data packet used forinstructing to close or open the data connection, wherein the secondappointed data packet may be specially the first instructioninformation; the UE transmits the second appointed data packet to theAS/AF of the network side through the preset channel, for enabling theAS/AF to implement corresponding processing of closing or opening thedata connection, so as to enable the P-GW of the network side to stop orstart the data transmission of at least one bearer of the UE, in thisway, the UE is unnecessary to be “always on”, that is to say, when theUE is not in a use state, the UE implements closing the data connection,and the corresponding network side P-GW stops the data transmission ofat least one bearer of the UE, such that consumptions of background datatraffics caused by the “always on” of the UE may be avoided, and atraffic of a terminal may be effectively controlled, thus a data trafficand an additional cost of a user may be saved and a user experience maybe improved.

FIG. 9 is a first structure schematic diagram of an embodiment of a userequipment UE provided by an embodiment of the present disclosure; the UEincludes: an obtaining module 901, configured to obtain firstinstruction information, wherein the first instruction information isused for instructing to close or open a data connection; and atransmitting module 902, configured to transmit the first instructioninformation to a packet data network gateway P-GW, for enabling the P-GWto stop or start data transmission of at least one bearer of the UEaccording to the first instruction information.

The obtaining module 901 may specifically refer to related descriptionsof S101 and S301; and functions of the transmitting module 902 mayspecifically refer to related descriptions of S102. The functions of theobtaining module 901 and the transmitting module 902 may be specificallyachieved by a first processor.

In one implementation, on the basis of including the obtaining module901 and the transmitting module 902, the UE may further include: asetting module, configured to set a first policy for the at least onebearer according to the first instruction information, wherein the firstpolicy is used for stopping or starting the data transmission of atleast one traffic flow in the at least one bearer; and a transmissioncontrol module, configured to stop or start the data transmission of theat least one traffic flow according to the first policy.

The functions of the setting module and the transmission control modulemay specifically refer to related descriptions of S301.

In another implementation, on the basis of including the obtainingmodule 901 and the transmitting module 902, the UE may further include:a deleting module, configured to receive a delete bearer requestinitiated by the P-GW and delete a part of bearers in the at least onebearer; a policy setting module, configured to set a second policy for abearer not deleted in the at least one bearer according to the firstinstruction information, wherein the second policy is used for stoppingthe data transmission of at least one traffic flow in the bearer notdeleted; a transmission stopping module, configured to stop the datatransmission of the at least one traffic flow according to the secondpolicy.

The functions of the deleting module, the policy setting module and thetransmission stopping module may specifically refer to relateddescriptions of S304.

The functions of the setting module, the transmission control module,the deleting module, the policy setting module and the transmissionstopping module may be achieved by a second processor in the processor.

In yet another implementation, the transmitting module 902 includes: afirst sending unit 9021, as shown in FIG. 10. FIG. 10 is a secondstructure schematic diagram of an embodiment of a user equipment UEprovided by an embodiment of the present disclosure.

The first sending unit 9021 is configured to send a service requestmessage, a tracking area update request message, or a request bearerresource modification message to a mobility management entity MME, forenabling the MME to obtain the first instruction information from theservice request message, the tracking area update request message or therequest bearer resource modification message, and transmit the firstinstruction information to the P-GW through a serving gateway S-GW.

The functions of the first sending unit 9021 may specifically refer torelated descriptions of S302-S303 and S402-S403.

The functions of the first sending unit 9021 may be specificallyachieved by a first sender.

In yet another implementation, the transmitting module 902 includes: asecond sending unit 9022, as shown in FIG. 11. FIG. 11 is a thirdstructure schematic diagram of an embodiment of a user equipment UEprovided by an embodiment of the present disclosure.

The second sending unit 9022 is configured to send a first appointeddata packet to the P-GW through a preset channel, wherein the firstappointed data packet comprises the first instruction information.

The functions of the second sending unit 9022 may specifically refer torelated descriptions of S502.

The functions of the second sending unit 9022 may be specificallyachieved by a second sender.

In yet another implementation, the transmitting module 902 includes: athird sending unit 9023, as shown in FIG. 12. FIG. 12 is a fourthstructure schematic diagram of an embodiment of a user equipment UEprovided by an embodiment of the present disclosure.

The third sending unit 9023 is configured to send a first appointed datapacket to the P-GW through a preset channel, to trigger the P-GW toforward the first appointed data packet to an application serverAS/application function AF, for enabling the AS/AF to obtain the firstinstruction information from the first appointed data packet, andimplement an application service information update procedure with apolicy and charging rules function PCRF according to the firstinstruction information, and the PCRF to send a policy and chargingrules update message to the P-GW after implementing the applicationservice information update procedure, for enabling the P-GW to stop orstart the data transmission of at least one bearer of the UE accordingto the policy and charging rules update message; wherein the policy andcharging rules update message comprises an access control policy usedfor closing or opening the data connection.

The functions of the third sending unit 9023 may specifically refer torelated descriptions of S702.

The functions of the third sending unit 9023 may be specificallyachieved by a third sender.

In yet another implementation, the transmitting module 902 includes: afourth sending unit 9024 or a fifth sending unit 9025, as shown in FIG.13. FIG. 13 is a fifth structure schematic diagram of an embodiment of auser equipment UE provided by an embodiment of the present disclosure.

The fourth sending unit 9024 is configured to send a second appointeddata packet to the P-GW through a preset channel, for enabling the P-GWto obtain closing data connection information according to a targetaddress and/or target port number of the second appointed data packet,and stop the data transmission of at least one bearer of the UEaccording to the closing data connection information, wherein the targetaddress of the second appointed data packet is a first preset value,and/or the target port number is a second preset value.

The fifth sending unit 9025 is configured to send a second appointeddata packet to the P-GW through a preset channel, for enabling the P-GWto obtain opening data connection information according to a targetaddress and/or target port number of the second appointed data packet,and start the data transmission of at least one bearer of the UEaccording to the opening data connection information, wherein the targetaddress of the second appointed data packet is a third preset value,and/or the target port number is a fourth preset value.

The functions of the fourth sending unit 9024 and the fifth sending unit9025 may specifically refer to related descriptions of S602.

The functions of the fourth sending unit 9024 may be specificallyachieved by a fourth sender, and the functions of the fifth sending unit9025 may be specifically achieved by a fifth sender.

In yet another implementation, the transmitting module 902 includes: asixth sending unit 9026 or a seventh sending unit 9027, as shown in FIG.14. FIG. 14 is a sixth structure schematic diagram of an embodiment of auser equipment UE provided by an embodiment of the present disclosure.

The sixth sending unit 9026 is configured to send a second appointeddata packet to the P-GW through a preset channel, to trigger the P-GW toforward the second appointed data packet to an AS/AF, for enabling theAS/AF to obtain closing data connection information according to atarget address and/or target port number of the second appointed datapacket, and implement an application service information updateprocedure with a PCRF according to the closing data connectioninformation, and the PCRF to send a policy and charging rules updatemessage to the P-GW after implementing the application serviceinformation update procedure, for enabling the P-GW to stop the datatransmission of at least one bearer of the UE according to the policyand charging rules update message; wherein the policy and charging rulesupdate message comprises an access control policy used for closing thedata connection; the target address of the second appointed data packetis a first preset value, and/or the target port number is a secondpreset value.

The seventh sending unit 9027 is configured to send a second appointeddata packet to the P-GW through a preset channel, to trigger the P-GW toforward the second appointed data packet to an AS/AF, for enabling theAS/AF to obtain opening data connection information according to atarget address and/or target port number of the second appointed datapacket, and implement an application service information updateprocedure with a PCRF according to the opening data connectioninformation, and the PCRF to send a policy and charging rules updatemessage to the P-GW after implementing the application serviceinformation update procedure, for enabling the P-GW to start the datatransmission of at least one bearer of the UE according to the policyand charging rules update message; wherein the policy and charging rulesupdate message comprises an access control policy used for opening thedata connection; the target address of the second appointed data packetis a third preset value, and/or the target port number is a fourthpreset value.

The functions of the sixth sending unit 9026 and the seventh sendingunit 9027 may specifically refer to related descriptions of S802.

The functions of the sixth sending unit 9026 may be specificallyachieved by a sixth sender, and the functions of the seventh sendingunit 9027 may be specifically achieved by a seventh sender.

In this embodiment, when the UE implements closing or opening the dataconnection, the UE obtains the first instruction information used forinstructing to close or open the data connection; the UE transmits thefirst instruction information to the P-GW of a network side, forenabling the P-GW to stop or start the data transmission of at least onebearer of the UE according to the first instruction information, in thisway, the UE is unnecessary to be “always on”, that is to say, when theUE is not in a use state, the UE implements closing the data connection,and the corresponding network side P-GW stops the data transmission ofat least one bearer of the UE, such that consumptions of background datatraffics caused by the “always on” of the UE may be avoided, and atraffic of a terminal may be effectively controlled, thus a data trafficand an additional cost of a user may be saved and a user experience maybe improved.

FIG. 15 is a first structure schematic diagram of an embodiment of apacket data network gateway P-GW provided by an embodiment of thepresent disclosure; the P-GW includes: a receiving module 101,configured to receive first instruction information transmitted by auser equipment UE, wherein the first instruction information is used forinstructing to close or open a data connection; and a control module102, configured to stop or start data transmission of at least onebearer of the UE according to the first instruction information.

The functions of the receiving module 101 and the control module 102 mayrespectively refer to related descriptions of S201 and S202. Thefunctions of the receiving module 101 and the control module 102 may bespecifically achieved by a third processor.

In one implementation, the receiving module 101 includes: a firstreceiving unit 1011, as shown in FIG. 16. FIG. 16 is a second structureschematic diagram of an embodiment of a packet data network gateway P-GWprovided by an embodiment of the present disclosure.

The first receiving unit 1011 is configured to receive the firstinstruction information transmitted by a mobility management entity MMEthrough a serving gateway S-GW, wherein the first instructioninformation is sent by the UE to the MME through a service requestmessage, a tracking area update request message or a request bearerresource modification message, and the first instruction information isobtained by the MME from the service request message, the tracking areaupdate request message or the request bearer resource modificationmessage.

The functions of the first receiving unit 1011 may specifically refer torelated descriptions of S304 and S404.

The functions of the first receiving unit 1011 may be specificallyachieved by a first receiver.

In another implementation, on the basis of including the receivingmodule 101 and the control module 102, the P-GW further includes: aresponse sending module 103, as shown in FIG. 17. FIG. 17 is a thirdstructure schematic diagram of an embodiment of a packet data networkgateway P-GW provided by an embodiment of the present disclosure.

The response sending module 103 is configured to, when the firstinstruction information is sent by the UE to the MME through the servicerequest message or the tracking area update request message, after theP-GW stops or starts the data transmission of at least one bearer of theUE according to the first instruction information, send a modify bearerresponse to the MME through an S-GW, for enabling the MME to send a dataconnection update response to the UE according to the modify bearerresponse, to notify the UE that the P-GW has stopped or started the datatransmission of at least one bearer of the UE.

The functions of the response sending module 103 may specifically referto related descriptions of S305-S306.

The functions of the response sending module 103 may be specificallyachieved by a fourth processor.

In yet another implementation, the receiving module 101 includes: asecond receiving unit 1012, as shown in FIG. 18. FIG. 18 is a fourthstructure schematic diagram of an embodiment of a packet data networkgateway P-GW provided by an embodiment of the present disclosure.

The second receiving unit 1012 is configured to receive a firstappointed data packet transmitted by the UE through a preset channel,wherein the first appointed data packet comprises the first instructioninformation.

The functions of the second receiving unit 1012 may specifically referto related descriptions of S503.

The functions of the second receiving unit 1012 may be specificallyachieved by a second receiver.

On the basis of the above-mentioned implementation, the control module102 includes:

a first control unit, configured to implement policy update processingwith a policy and charging rules function PCRF according to the firstinstruction information, receive an access control policy after thepolicy update processing, sent by the PCRF, and stop or start the datatransmission of at least one bearer of the UE according to the firstinstruction information and/or the access control policy.

The functions of the first control unit may specifically refer torelated descriptions of S304, S405 and S503.

The functions of the first control unit may be specifically achieved bya fifth processor.

In yet another implementation, the receiving module 101 includes: athird receiving unit 1013, correspondingly, the control module 102includes a first forwarding unit 1021 and a second control unit 1022, asshown in FIG. 19. FIG. 19 is a fifth structure schematic diagram of anembodiment of a packet data network gateway P-GW provided by anembodiment of the present disclosure.

The third receiving unit 1013 is configured to receive a first appointeddata packet transmitted by the UE through a preset channel, wherein thefirst appointed data packet comprises the first instruction information.

The first forwarding unit 1021 is configured to forward the firstappointed data packet to an application server AS/application functionAF, for enabling the AS/AF to obtain the first instruction informationfrom the first appointed data packet, and implement application serviceinformation update processing with a PCRF according to the firstinstruction information.

The second control unit 1022 is configured to receive a policy andcharging rules update message generated by the PCRF after theapplication service information update processing, and stop or start thedata transmission of at least one bearer of the UE according to thepolicy and charging rules update message; wherein the policy andcharging rules update message comprises an access control policy usedfor closing or opening the data connection.

The functions of the third receiving unit 1013, the first forwardingunit 1021 and the second control unit 1022 may specifically refer torelated descriptions of S703.

The functions of the third receiving unit 1013 may be specificallyachieved by a third receiver; and the functions of the first forwardingunit 1021 and the second control unit 1022 may be specifically achievedby a sixth processor.

In yet another implementation, the receiving module 101 includes: afourth receiving unit 1014, correspondingly, the control module 102includes an information obtaining unit 1023 and a third control unit1024, as shown in FIG. 20. FIG. 20 is a sixth structure schematicdiagram of an embodiment of a packet data network gateway P-GW providedby an embodiment of the present disclosure.

The fourth receiving unit 1014 is configured to receive a secondappointed data packet transmitted by the UE through a preset channel.

The information obtaining unit 1023 is configured to obtain closing oropening data connection information according to a target address and/ortarget port number of the second appointed data packet, wherein if thetarget address of the second appointed data packet is a first presetvalue, and/or the target port number is a second preset value, thesecond appointed data packet corresponds to closing the data connection;and if the target address of the second appointed data packet is a thirdpreset value, and/or the target port number is a fourth preset value,the second appointed data packet corresponds to opening the dataconnection.

The third control unit 1024 is configured to correspondingly stop orstart the data transmission of at least one bearer of the UE accordingto the closing or opening data connection information; or implementpolicy update processing with a PCRF according to the closing or openingdata connection information, receive an access control policy sent bythe PCRF, and stop or start the data transmission of at least one bearerof the UE according to the access control policy.

The functions of the fourth receiving unit 1014, the informationobtaining unit 1023 and the third control unit 1024 may specificallyrefer to related descriptions of S603.

The functions of the fourth receiving unit 1014 may be specificallyachieved by a fourth receiver; and the functions of the informationobtaining unit 1023 and the third control unit 1024 may be specificallyachieved by a seventh processor.

In yet another implementation, the receiving module 101 includes: afifth receiving unit 1015, correspondingly, the control module 102includes a second forwarding unit 1025 and a fourth control unit 1026,as shown in FIG. 21. FIG. 21 is a seventh structure schematic diagram ofan embodiment of a packet data network gateway P-GW provided by anembodiment of the present disclosure.

The fifth receiving unit 1015 is configured to receive a secondappointed data packet transmitted by the UE through a preset channel.

The second forwarding unit 1025 is configured to forward the secondappointed data packet to an AS/AF, for enabling the AS/AF to obtainclosing or opening data connection information according to a targetaddress and/or target port number of the second appointed data packet,and implement application service information update processing with aPCRF according to the closing or opening data connection information,wherein if the target address of the second appointed data packet is afirst preset value, and/or the target port number is a second presetvalue, the second appointed data packet corresponds to closing the dataconnection; and if the target address of the second appointed datapacket is a third preset value, and/or the target port number is afourth preset value, the second appointed data packet corresponds toopening the data connection;

the fourth control unit 1026 is configured to receive a policy andcharging rules update message generated by the PCRF after theapplication service information update processing, and stop or start thedata transmission of at least one bearer of the UE according to thepolicy and charging rules update message; wherein the policy andcharging rules update message comprises an access control policy usedfor closing or opening the data connection.

The functions of the fifth receiving unit 1015, the second forwardingunit 1025 and the fourth control unit 1026 may specifically refer torelated descriptions of S803-S805.

The functions of the fifth receiving unit 1015 may be specificallyachieved by a fifth receiver; and the functions of the second forwardingunit 1025 and the fourth control unit 1026 may be specifically achievedby an eighth processor.

In yet another implementation, the control module 102 includes: a bearerdeleting unit, configured to implement a bearer deletion flow to deleteother bearers excluding a default bearer in the at least one bearer, ordelete at least one appointed bearer excluding the default bearer in theat least one bearer; and a fifth control unit, configured to stop thedata transmission of a bearer not deleted in the at least one beareraccording to the first instruction information.

The fifth control unit includes: a setting subunit, configured to set asecond policy for the bearer not deleted according to the firstinstruction information, wherein the second policy is used for stoppingthe data transmission of at least one traffic flow in the bearer notdeleted; and a stopping subunit, configured to stop the datatransmission of the at least one data flow according to the secondpolicy.

In yet another implementation, the P-GW further includes: a bearerupdating module, configured to implement a bearer update flow after theP-GW implements bearer deletion processing to delete other bearersexcluding the default bearer in the at least one bearer.

In yet another implementation, the control module 102 may include: asetting unit, configured to set a third policy for the at least onebearer according to the first instruction information, wherein the thirdpolicy is used for starting the data transmission of at least onetraffic flow in a bearer not deleted; and a starting unit, configured tostart the data transmission of the at least one data flow according tothe third policy.

The functions of the bearer deleting unit, the fifth control unit, thesetting subunit, the stopping subunit, the bearer updating module, thesetting unit and the starting unit may specifically refer to relateddescriptions of S304 and S405.

The functions of the bearer deleting unit, the fifth control unit, thesetting subunit, the stopping subunit, the bearer updating module, thesetting unit and the starting unit may be specifically achieved by aninth processor.

In this embodiment, when the UE implements closing or opening the dataconnection, the P-GW receives the first instruction informationtransmitted by the UE and used for instructing to close or open the dataconnection; the P-GW stops or starts the data transmission of at leastone bearer of the UE according to the first instruction information, inthis way, the UE is unnecessary to be “always on”, that is to say, whenthe UE is not in a use state, the UE implements closing the dataconnection, and the corresponding network side P-GW stops the datatransmission of at least one bearer of the UE, such that consumptions ofbackground data traffics caused by the “always on” of the UE may beavoided, and a traffic of a terminal may be effectively controlled, thusan additional cost of a user may be reduced.

FIG. 22 is a structure schematic diagram of an embodiment of a systemfor data connection management provided by an embodiment of the presentdisclosure. The system for data connection management includes: a userequipment UE 90 and a packet data network gateway P-GW 10, wherein thefunctions of the user equipment UE are similar to the functions of theUE in the apparatus embodiments corresponding to FIG. 9, thus will notbe repeated redundantly herein and may specifically refer to relateddescriptions of the above-mentioned embodiments; the functions of thepacket data network gateway P-GW are similar to the functions of theP-GW in the apparatus embodiments corresponding to FIG. 10, thus willnot be repeated redundantly herein and may specifically refer to relateddescriptions of the above-mentioned embodiments.

On the basis of including the UE 90 and the P-GW 10, the system for dataconnection management may further include: an eNB, an MME, an S-GW and aPCRF, the functions of the eNB, the MME, the S-GW and the PCRF mayspecifically refer to related descriptions of all the above-mentionedembodiments, and will not be repeated redundantly herein.

In addition, the system for data connection management may furtherinclude an AS/AF, the functions of the AS/AF may specifically refer torelated descriptions of the method embodiments corresponding to FIG. 7and FIG. 8, and will not be repeated redundantly herein.

In this embodiment, when the UE implements closing or opening the dataconnection, the UE obtains the first instruction information used forinstructing to close or open the data connection; the UE transmits thefirst instruction information to the P-GW of a network side, and theP-GW stops or starts the data transmission of at least one bearer of theUE according to the first instruction information, in this way, the UEis unnecessary to be “always on”, that is to say, when the UE is not ina use state, the UE implements closing the data connection, and thecorresponding network side P-GW stops the data transmission of at leastone bearer of the UE, such that consumptions of background data trafficscaused by the “always on” of the UE may be avoided, and a traffic of aterminal may be effectively controlled, thus a data traffic and anadditional cost of a user may be saved and a user experience may beimproved.

It should be noted that, the embodiments in the description aredescribed in a progressive manner, and what is highlighted in eachembodiment is the difference from other embodiments, and the identicalor similar parts between the embodiments may refer to each other. Forthe apparatus embodiments, they are basically similar to the methodembodiments, thus are described simply, and related parts may refer toparts of illustration of the method embodiments.

It should be noted that, in this paper, such relationship terms asfirst, second and the like are merely used for distinguishing one entityor operation from another entity or operation, but not necessarilyrequire or imply that any actual relationship or sequence exist betweenthese entities or operations. Moreover, the terms “include”, “comprise”or any other variants are intended to cover non-exclusive inclusion,such that a process, a method, an object or an apparatus including aseries of factors not only includes those factors, but also includesother factors not explicitly listed, or further includes the inherentfactors of this process, method, object or apparatus. In the absence ofmore limited conditions, factors limited by the statement “includes a .. . ” does not exclude the possibility that the process, method, objector apparatus including the factors also has additional identicalfactors.

Those of ordinary skill in the art may understand that all or a part ofthe steps in the above-mentioned embodiments may be implemented byhardware, or by a program instructing related hardware, the program maybe stored in a computer readable storage medium, and the above-mentionedstorage medium may be a read-only memory, a magnetic disk, an opticaldisk or the like.

The foregoing descriptions are merely preferred embodiments of thepresent disclosure, rather than limiting the present disclosure. Anymodifications, equivalent substitutions, improvements and the like madewithin the principle of the present disclosure should be encompassed inthe protection scope of the present disclosure.

What is claimed is:
 1. A method, comprising: obtaining, by a userequipment (UE), first instruction information, wherein the firstinstruction information instructs to close a data connection; inresponse to obtaining the first instruction information, closing, by theUE, the data connection; and transmitting, by the UE, the firstinstruction information to a packet data network gateway via a mobilitymanagement entity and a serving gateway, wherein the first instructioninformation enables the packet data network gateway to stop datatransmission of at least one bearer of the UE according to the firstinstruction information; wherein the data connection is of a particulartraffic flow, and the first instruction information comprises:identification information of the particular traffic flow or informationof an application program corresponding to the particular traffic flow;wherein the identification information of the particular traffic flowcomprises: a source internet protocol (IP) address, a target IP address,a source port number, a target port number, or a protocol type of theparticular traffic flow; and wherein the information of the applicationprogram corresponding to the particular traffic flow comprises: anapplication program identifier, an application program title or anapplication program serial number.
 2. The method of claim 1, wherein theobtaining of the first instruction information is triggered by a user ofthe UE.
 3. The method of claim 1, further comprising: setting, by theUE, a first policy for the at least one bearer according to the firstinstruction information, wherein the first policy instructs to stop thedata transmission of at least one traffic flow in the at least onebearer; and stopping, by the UE, the data transmission of the at leastone traffic flow according to the first policy.
 4. The method of claim1, wherein the first instruction information is transmitted to thepacket data network gateway in a service request message.
 5. The methodof claim 1, wherein the first instruction information is transmitted tothe packet data network gateway in a tracking area update requestmessage.
 6. The method of claim 1, wherein the first instructioninformation is transmitted to the packet data network gateway in arequest bearer resource modification message.
 7. The method of claim 1,further comprising: receiving, by the UE, a delete bearer request fromthe packet data network gateway; deleting, by the UE, a first bearer inresponse to the delete bearer request, wherein the at least one bearerincludes the first bearer and a second bearer, and the second bearer isnot deleted in response to the delete bearer request; setting, by theUE, a second policy for the second bearer according to the firstinstruction information, wherein the second policy instructs to stop adata transmission of at least one traffic flow in the second bearer; andstopping, by the UE, the data transmission of the at least one trafficflow according to the second policy.
 8. The method of claim 1, furthercomprising: after closing the data connection, obtaining, by the UE,third instruction information, wherein the third instruction informationinstructs to open the data connection; opening, by the UE, the dataconnection in response to the third instruction information; andtransmitting, by the UE, the third instruction information to the packetdata network gateway.
 9. A user equipment (UE), comprising: aninterface; a processor; and a non-transitory computer-readable storagemedium storing a program to be executed by the processor, the programincluding instructions to: obtain, using the interface, firstinstruction information, wherein the first instruction informationinstructs to close a data connection; close the data connection inresponse obtaining to the first instruction information; and transmitthe first instruction information to a packet data network gateway via amobility management entity and a serving gateway, wherein the firstinstruction information enables the packet data network gateway to stopdata transmission of at least one bearer of the UE according to thefirst instruction information; wherein the data connection is of aparticular traffic flow, and the first instruction informationcomprises: identification information of the particular traffic flow orinformation of an application program corresponding to the particulartraffic flow; wherein the identification information of the particulartraffic flow comprises: a source internet protocol (IP) address, atarget IP address, a source port number, a target port number, or aprotocol type of the particular traffic flow; and wherein theinformation of the application program corresponding to the particulartraffic flow comprises: an application program identifier, anapplication program title or an application program serial number. 10.The UE of claim 9, wherein obtaining the first instruction informationis triggered by a user of the UE.
 11. The UE of claim 9, wherein theprogram further includes instructions to: set a first policy for the atleast one bearer according to the first instruction information, whereinthe first policy instructs to stop the data transmission of at least onetraffic flow in the at least one bearer; and stop the data transmissionof the at least one traffic flow according to the first policy.
 12. TheUE of claim 9, wherein the first instruction information is transmittedto the packet data network gateway in a request bearer resourcemodification message.
 13. The UE of claim 9, wherein the program furtherincludes instructions to: receive, using the interface, a delete bearerrequest from the packet data network gateway; delete a first bearer inresponse to the delete bearer request, wherein the at least one bearerincludes the first bearer and a second bearer, and the second bearer isnot deleted in response to the delete bearer request; set a secondpolicy for the second bearer according to the first instructioninformation, wherein the second policy instructs to stop datatransmission of at least one traffic flow in the second bearer; and stopthe data transmission of the at least one traffic flow according to thesecond policy.
 14. The UE of claim 9, wherein the program furtherinclude instructions to: after closing the data connection, obtain,using the interface, third instruction information, wherein the thirdinstruction information instructs to open the data connection; open thedata connection in response to the third instruction information; andtransmit, using the interface, the third instruction information to thepacket data network gateway.
 15. A non-transitory computer-readablemedium storing computer instructions for execution by one or moreprocessors, wherein, when the computer instructions are executed by theone or more processors, the computer instructions instruct the one ormore processors to perform operations of: obtaining first instructioninformation, wherein the first instruction information instructs toclose a data connection; closing the data connection in response toobtaining the first instruction information; and transmitting the firstinstruction information to a packet data network gateway via a mobilitymanagement entity and a serving gateway, wherein the first instructioninformation enables the packet data network gateway to stop datatransmission of at least one bearer of a user equipment (UE) accordingto the first instruction information; wherein the data connection is ofa particular traffic flow, and the first instruction informationcomprises: identification information of the particular traffic flow orinformation of an application program corresponding to the particulartraffic flow; wherein the identification information of the particulartraffic flow comprises: a source internet protocol (IP) address, atarget IP address, a source port number, a target port number, or aprotocol type of the particular traffic flow; and wherein theinformation of the application program corresponding to the particulartraffic flow comprises: an application program identifier, anapplication program title or an application program serial number.